#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string.h>
int main()
{
	int i = 0;
	char sb[200] = {0};
	scanf("%s",&sb);
	int lensb = strlen(sb);
	int j = 0;
	for (i = 0; i < lensb; i++)
	{
		if (sb[i] == 'a' || sb[i] == 'o' || sb[i] == 'e' || sb[i] == 'i' || sb[i] == 'u')
		{
			j++;
		}
	}
	printf("%d\n", j);
	return 0;
}